Polarization control of electromagnetic wave is very important in many fields. Here, we propose an active meta-mirror to dynamically manipulate electromagnetic polarization state at a broad band. This meta-mirror is composed of a double-layered metallic pattern backed by a metallic flat plate, and the active elements of PIN diodes are integrated into the meta-atom to control the reflection phas...

A wideband slotted circularly polarized (CP) patch antenna is introduced for 5–6-GHz WLAN applications. A small 14.6 14.6 mm square patch on Duroid 5880 substrate can provide a returnloss bandwidth of 11% and an axial-ratio bandwidth of 8% with a single feed. A possible reconfigurable design achievable using PIN diode or MEMS switches capable of left-hand or right-hand circular polarization is ...

A multi-polarization series-fed antenna working at 10 GHz is presented in this paper. The patch elements are built by eccentric rings which can realize the performance of circular polarization. dual-port feeding allows us to switch polarization antenna. right-hand (RHCP), left-hand (LHCP), and Linear (LP) be realized properly form. changing without controlling. Owing array arrangement, form a c...

A fission transmission linear-to-circular polarization conversion based on bi-layer structure is proposed which is composed of 3 × 3 array to convert linear-to-circular polarized wave. The structure is constructed by half square with “H” shape printed on both sides of the dielectric substrate that are subjected to obtain multi-band at resonance frequencies. The proposed structure realizes the g...

Self-action of an initially elliptically polarized Gaussian beam in the isotropic phase a cholesteric liquid crystal near temperature transition is studied. It shown that nonlocality optical properties leads to significantly different self-action behavior light beams with right-hand and left-hand elliptical polarization. Numerous lines circular polarization singularity ( <mml:math xmlns:mml="ht...

This paper presents an element of a 2×2-element array antenna for Inmarsat BGAN/GPS applications. The element is an axial mode printed quadrifilar helical antenna that has been integrated with a compact feed network to provide sequential phase rotation for circular polarization (CP) radiation. The novel integrated lumped-element feed network is designed to provide a balanced RF power to the fou...

The light reflected from the metallic-shiny regions of the cuticle of certain beetles belonging to the Scarabaeoidea is known since 1911 to be left-handed circularly polarized. Only photographs of a few selected species of scarabs, taken through left- and right-circular polarizers, have earlier been published. Through a right-circular polarizer these beetles appear more or less dark. This demon...

We present a status report of dedicated circular polarization (CP) global VLBI observations of SS433. The total intensity image of the source is presented. We do not detect linear polarization in the core region of the source. We estimate the errors in D-terms for the EVN, and its effect on the final right-left circular polarization gain calibration. The data from this and earlier observations ...

A new design method for an ultra-wideband circularly polarized microstrip-fed monopole antenna with a ground defect is proposed in this paper. To achieve circular polarization performance, parallelogram-shaped employed the bottom layer. The analysis of axial ratio (AR) and impedance bandwidth performed both top layers. semi-circular aperture designed to matching 24–40 GHz frequency range. Then,...

Aiming to the limitations of traditional reconfigurable antennas, this paper proposes a novel antenna that can achieve four polarizations and continuously-tunable frequency. The proposed is based on liquid metal, i.e. eutectic gallium indium (EGaIn). pattern slots be controlled by changing amount metal inserted in 3-D printed channels. work under polarization modes: left-hand circular (LHCP), r...